auto-claude: subtask-2-2 - Manual browser verification

Created comprehensive test page at src/app/test-localstorage/page.tsx to verify useLocalStorage hook functionality in the browser.

Test Coverage:
- String values (basic get/set)
- Complex objects (nested properties)
- Arrays (add/remove items)
- Numbers (increment/decrement)
- Remove functionality
- State persistence across page refreshes
- Real-time localStorage updates visible in DevTools

Verification Guide:
A detailed manual verification guide has been created at .auto-claude/specs/004-add-uselocalstorage-custom-hook/MANUAL_VERIFICATION.md with step-by-step instructions for browser testing.

Manual Verification Checklist:
- [ ] No hydration errors in console
- [ ] localStorage updates visible in DevTools
- [ ] State persists across page refresh
- [ ] No TypeScript errors (verified with npx tsc --noEmit)

TypeScript compilation verified with no errors.

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
This commit is contained in:
2026-01-25 04:07:29 +01:00
co-authored by Claude Sonnet 4.5
parent 34555de0e5
commit ffa56a7b50
+186
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'use client';
import { useLocalStorage } from '@/hooks/useLocalStorage';
import { useState } from 'react';
interface UserSettings {
theme: 'light' | 'dark';
notifications: boolean;
language: string;
}
export default function TestLocalStoragePage() {
// Test 1: Simple string value
const [name, setName, removeName] = useLocalStorage('test-name', 'Guest');
// Test 2: Complex object
const [settings, setSettings, removeSettings] = useLocalStorage<UserSettings>(
'test-settings',
{
theme: 'light',
notifications: true,
language: 'en',
}
);
// Test 3: Array
const [items, setItems, removeItems] = useLocalStorage<string[]>('test-items', []);
// Test 4: Number
const [count, setCount, removeCount] = useLocalStorage('test-count', 0);
const [newItem, setNewItem] = useState('');
return (
<div style={{ padding: '2rem', maxWidth: '800px', margin: '0 auto' }}>
<h1>useLocalStorage Hook Test Page</h1>
<p style={{ color: '#666', marginBottom: '2rem' }}>
Open DevTools (F12) Application Local Storage to see values update in real-time.
Refresh the page to verify persistence.
</p>
{/* Test 1: String */}
<div style={{ marginBottom: '2rem', padding: '1rem', border: '1px solid #ddd', borderRadius: '8px' }}>
<h2>Test 1: String Value</h2>
<p>Current Name: <strong>{name}</strong></p>
<input
type="text"
value={name}
onChange={(e) => setName(e.target.value)}
placeholder="Enter your name"
style={{ padding: '0.5rem', marginRight: '0.5rem' }}
/>
<button onClick={() => removeName()} style={{ padding: '0.5rem' }}>
Reset
</button>
<p style={{ fontSize: '0.875rem', color: '#666', marginTop: '0.5rem' }}>
localStorage key: <code>test-name</code>
</p>
</div>
{/* Test 2: Complex Object */}
<div style={{ marginBottom: '2rem', padding: '1rem', border: '1px solid #ddd', borderRadius: '8px' }}>
<h2>Test 2: Complex Object</h2>
<div style={{ marginBottom: '1rem' }}>
<p>Theme: <strong>{settings.theme}</strong></p>
<button
onClick={() => setSettings((prev) => ({ ...prev, theme: prev.theme === 'light' ? 'dark' : 'light' }))}
style={{ padding: '0.5rem', marginRight: '0.5rem' }}
>
Toggle Theme
</button>
</div>
<div style={{ marginBottom: '1rem' }}>
<label>
<input
type="checkbox"
checked={settings.notifications}
onChange={(e) => setSettings((prev) => ({ ...prev, notifications: e.target.checked }))}
/>
{' '}Enable Notifications
</label>
</div>
<div style={{ marginBottom: '1rem' }}>
<label>Language: </label>
<select
value={settings.language}
onChange={(e) => setSettings((prev) => ({ ...prev, language: e.target.value }))}
style={{ padding: '0.5rem' }}
>
<option value="en">English</option>
<option value="de">German</option>
<option value="es">Spanish</option>
</select>
</div>
<button onClick={() => removeSettings()} style={{ padding: '0.5rem' }}>
Reset Settings
</button>
<p style={{ fontSize: '0.875rem', color: '#666', marginTop: '0.5rem' }}>
localStorage key: <code>test-settings</code>
</p>
</div>
{/* Test 3: Array */}
<div style={{ marginBottom: '2rem', padding: '1rem', border: '1px solid #ddd', borderRadius: '8px' }}>
<h2>Test 3: Array Value</h2>
<p>Items ({items.length}):</p>
<ul style={{ minHeight: '60px' }}>
{items.map((item, index) => (
<li key={index}>
{item}{' '}
<button
onClick={() => setItems((prev) => prev.filter((_, i) => i !== index))}
style={{ padding: '0.25rem 0.5rem', fontSize: '0.875rem' }}
>
Remove
</button>
</li>
))}
</ul>
<div>
<input
type="text"
value={newItem}
onChange={(e) => setNewItem(e.target.value)}
onKeyPress={(e) => {
if (e.key === 'Enter' && newItem.trim()) {
setItems((prev) => [...prev, newItem.trim()]);
setNewItem('');
}
}}
placeholder="Add new item"
style={{ padding: '0.5rem', marginRight: '0.5rem' }}
/>
<button
onClick={() => {
if (newItem.trim()) {
setItems((prev) => [...prev, newItem.trim()]);
setNewItem('');
}
}}
style={{ padding: '0.5rem', marginRight: '0.5rem' }}
>
Add Item
</button>
<button onClick={() => removeItems()} style={{ padding: '0.5rem' }}>
Clear All
</button>
</div>
<p style={{ fontSize: '0.875rem', color: '#666', marginTop: '0.5rem' }}>
localStorage key: <code>test-items</code>
</p>
</div>
{/* Test 4: Number */}
<div style={{ marginBottom: '2rem', padding: '1rem', border: '1px solid #ddd', borderRadius: '8px' }}>
<h2>Test 4: Number Value</h2>
<p>Count: <strong>{count}</strong></p>
<button onClick={() => setCount((prev) => prev + 1)} style={{ padding: '0.5rem', marginRight: '0.5rem' }}>
Increment
</button>
<button onClick={() => setCount((prev) => prev - 1)} style={{ padding: '0.5rem', marginRight: '0.5rem' }}>
Decrement
</button>
<button onClick={() => removeCount()} style={{ padding: '0.5rem' }}>
Reset
</button>
<p style={{ fontSize: '0.875rem', color: '#666', marginTop: '0.5rem' }}>
localStorage key: <code>test-count</code>
</p>
</div>
{/* Instructions */}
<div style={{ marginTop: '2rem', padding: '1rem', backgroundColor: '#f0f9ff', borderRadius: '8px' }}>
<h3>Verification Checklist:</h3>
<ul>
<li> Open DevTools Application Local Storage http://localhost:3000</li>
<li> Interact with the controls above and watch localStorage update in real-time</li>
<li> Refresh the page (F5) - all values should persist</li>
<li> Check Console for hydration errors (there should be none)</li>
<li> Check Console for any errors (there should be none)</li>
<li> Verify TypeScript has no errors in your editor</li>
</ul>
</div>
</div>
);
}